sábado, 27 de febrero de 2016

Laura's class: Fifth Graders: Heart contest!

Laura's class: Fifth Graders: Heart contest!: Howdy, my little ducklings! As we have seen, our heart is divided into four separate chambers. Now, some vertebrates have three- chambered...



Hi Laura, I'm Alfonso, The answer is (amphibians and reptiles)---> two atria and on venticle.

strong hug.

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